#!/bin/sh -efu
#
# Copyright (C) 2006  Dmitry V. Levin <ldv@altlinux.org>
# Copyright (C) 2007  Alexey Tourbin <at@altlinux.org>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# 
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
#

. @RPMCONFIGDIR@/functions

[ -n "${RPM_LIBDIR-}" ] || RPM_LIBDIR=`rpm --eval %_libdir`
PKG_CONFIG_PATH=$RPM_LIBDIR/pkgconfig:/usr/share/pkgconfig
[ -z "${RPM_BUILD_ROOT-}" ] ||
PKG_CONFIG_PATH=$RPM_BUILD_ROOT$RPM_LIBDIR/pkgconfig:$RPM_BUILD_ROOT/usr/share/pkgconfig:$PKG_CONFIG_PATH
export PKG_CONFIG_PATH

reqprov=
PkgconfigReqProv()
{
	local f="$1" out=; shift
	out=$(pkg-config --print-errors --print-"${reqprov:?}" "$f") ||
		Fatal "failed to process $f"
	[ -n "$out" ] || return 0
	echo "$out" |while read -r line; do
		set -- $line
		case $# in
			1 | 3 ) ;;
			*) Fatal "$f: invalid pkg-config output: $line" ;;
		esac
		case "$1" in
			*[!A-Za-z0-9_.+-]*)
			   Fatal "$f: invalid pkg-config output: $line" ;;
			[A-Za-z0-9]*) ;;
			[_+]*[A-Za-z0-9]*) ;;
			*) Fatal "$f: invalid pkg-config output: $line" ;;
		esac
		if [ $# = 1 ]; then
			echo "pkgconfig($1)"
			continue
		fi
		case "$2" in
			[\<\>=] | [\<\>]= ) ;;
			*) Fatal "$f: invalid pkg-config output: $line" ;;
		esac
		case "$3" in
			*[!A-Za-z0-9_.+-]*)
			   Fatal "$f: invalid pkg-config output: $line" ;;
			[A-Za-z0-9]*) ;;
			[_+]*[A-Za-z0-9]*) ;;
			*) Fatal "$f: invalid pkg-config output: $line" ;;
		esac
		echo "pkgconfig($1) $2 $3"
	done
}

case "${0##*/}" in
	pkgconfig.req*) reqprov=requires ArgvFileAction PkgconfigReqProv "$@" ;;
	pkgconfig.prov*) reqprov=provides ArgvFileAction PkgconfigReqProv "$@" ;;
	*) Fatal "req/prov method not recognized" ;;
esac
